im posting this for a friend with a 91 sentra with a GTIR hes what he wrote

I was pushin my car at the top of third when the car suddenly just shut down. Well i go under the hood and noticed that the stub on the intake manifold that is supposed to be capped off wasnt. So i recap it and try to start my car...nothin. I call XAT and they said try a new mass airflow sensor.
So i buy a new one and still nothing. I dont understand why my car isnt starting from just a boost leak that i already fixed.

Any suggestions are helpful.. also if you need more info let me know


thanks